It takes a lot more exercize to burn food off than people think, especially to burn fat off.

It’s not necessarily the intensity but the duration. The exercise must be long enough that fat is metabolized.

Depending on several factors, there can be a 10–20 min period of time after the onset of exercise until fat metabolism can catch up with carbohydrate metabolism.

…calstate.edu/…/8-5-exercise-intensity-and-fuel-u…